IJIS Web Site. North Cascade Glacier Climate Project. World Glacier Monitoring Service. For more than a century, the World Glacier Monitoring Service (WGMS) and its predecessor organizations have been compiling and disseminating standardized data on glacier fluctuations. Thereto, the WGMS annually collects glacier data through its scientific collaboration network that is active in more than 30 countries. More... In close collaboration with the U.S.
National Snow and Ice Data Center (NSIDC) and the Global Land Ice Measurements from Space (GLIMS) initiative, the WGMS runs the Global Terrestrial Network for Glaciers (GTN-G) in support of the United Nations Framework Convention on Climate Change (UNFCC). More... photo: participants of the WGMS General Assembly 2010 (by F. SOTC: Introduction. NSIDC's State of the Cryosphere provides an overview of the status of snow, ice, and permafrost as indicators of climate change. This site provides time-series data for Northern Hemisphere snow cover, mountain glacier fluctuations, sea ice extent and concentration, changes in ice shelves, and global sea level. It also provides a snapshot of current permafrost conditions. Image credits clockwise from top left: Formosat image of icebergs © 2008 Dr. Cheng-Chien Liu, National Cheng-Kung University and Dr. Introduction: Are global temperatures rising?
Northern Hemisphere Snow: What satellite sensors are telling us about snow cover Glaciers: Mountain glacier fluctuations Permafrost and Frozen Ground: Insights from a Northern Hemisphere map and field observations Sea Ice: What satellite sensors are telling us about global sea ice extent and concentration Ice Shelves: Rapid response to climate change Ice Sheets: Is ice sheet mass changing? Sea Level: Is global sea level rising? Scientific References. Polar Sea Ice Cap and Snow - Cryosphere Today. Polar Science Center - APL-UW - Home. PSU Glacier Research. Arctic Sea Ice News & Analysis. The sea ice extent has been quickly growing, and by the end of October, ice covered most of the Arctic Ocean. Overall, the ice extent remained below average for this time of year in the Barents and Kara Seas, as well as within northern Baffin Bay and the East Greenland Sea. Overview of conditions Figure 1. Arctic sea ice extent for October 2021 was 6.77 million square kilometers (2.61 million square miles).
Credit: National Snow and Ice Data CenterHigh-resolution image The monthly average extent for October 2021 was 6.77 million square kilometers (2.61 million square miles). Conditions in context Figure 2a. Credit: National Snow and Ice Data CenterHigh-resolution image Figure 2b. Credit: NSIDC courtesy NOAA Earth System Research Laboratory Physical Sciences Laboratory High-resolution image Figure 2c.
Credit: NSIDC courtesy NOAA Earth System Research Laboratory Physical Sciences Laboratory High-resolution image October 2021 compared to previous years Figure 3. Figure 4. Figure 5. References.